Caution Serial Wiring EX500/EX250/EX260/EX120 Precautions Warning Caution Safety Instructions for Cable Caution Power Supply Safety Instructions Caution 1. These products are intended for use in general factory automation equipment. Avoid using these products in machinery/equipment which affects human safety, and in cases where malfunction or failure can result in extensive damage. 2. Do not use in an explosive atmosphere, environment with inflammable gases, or corrosive atmosphere. This can cause injury or fire, etc. 3.Work such as transporting, installing, piping, wiring, operation, control and maintenance should be performed by personnel with specialized knowledge. There is a danger of electrocution, injury or fire, etc. 4. Install an external emergency stop circuit that can promptly stop operation and shut off the power supply. 5. Do not remodel these products, as there is a danger of injury and damage. 6. Do not wipe the product with chemicals, etc. 1. Read the instruction manual carefully, strictly observe the precautions and operate within the range of the specifications. 2. Do not drop these products or submit them to strong impacts. This can cause damage, failure or malfunction, etc. 3. In locations with poor electrical conditions, take steps to ensure a steady flow of the rated power supply. Use of a voltage outside of the specifications can cause malfunction, damage to the unit, electrocution or fire, etc. 4. Do not touch connector terminals or internal substrates when current is being supplied. There is a danger of malfunction, damage to the unit or electrocution if connector terminals or internal substrates are touched when current is being supplied. Be sure that the power supply is OFF when adding or removing manifold valves or input blocks, etc., or when connecting or disconnecting connectors. 5. Operate at an ambient temperature that is within the specifications. Even when the ambient temperature range is within the specifications, do not use in locations where there are rapid temperature changes. 6. Keep wire scraps and other extraneous material from getting inside these products. This can cause fire, failure or malfunction, etc. 7. Give consideration to the operating environment depending on the type of enclosure being used. To achieve IP65 or IP67 protection, provide appropriate wiring between all units using electrical wiring cables, communication connectors and cables with M12 connectors. Also, provide waterproof caps when there are unused ports, and perform proper mounting of input units, input bolcks, SI units and manifold valves, etc. Provide a cover or other protection for applications in which there is constant exposure to water. 8. Obey the proper tightening torque. There is a possibility of damaging threads if tightening exceeds the tightening torque range. 9. Provide adequate protection when operating in locations such as the following: . Where noise is generated by static electricity, etc. . Where there is a strong electric field . Where there is a danger of exposure to radiation . When in close proximity to power supply lines 10. When these products are installed in equipment, provide adequate protection against noise by using noise filters, etc. 11. Since these products are components that are used after installation in other equipment, the customer should confirm conformity to EMC directives for the finished product. 12. Do not remove the name plate. 13. Perform periodic inspections and confirm normal operation. It may otherwise be impossible to guarantee safety due to unexpected malfunction or erroneous operation. 14. Do not use in places where there are cyclic temperature changes. In case that the cyclic temperature is beyond normal temperature changes, the inside the product is likely to be adversely effected. 15. Do not use in direct sunlight. Do not use in direct sunlight. It may cause malfunction or damage. 16. Do not use in places where there is radiated heat around it. Such a place is likely to cause malfunction. 1. Operation is possible with a single power supply or a separate power supply. However, be sure to provide two wiring systems (one for solenoid valves, and one for input and control units). 2. Use the following UL approved products for DC power supply combinations. 1) Controlled voltage current circuit conforming to UL508 Circuit uses the secondary coil of an isolated transformer as the power supply, satisfying the following conditions. . Max. voltage (with no load): 30 Vrms (42.4 V peak) or less . Max. current: (1) 8 A or less (including shorts), and (2) When controlled by a circuit protector (fuse, etc.) with the following rating 2) A circuit (class 2 circuit) with maximum 30 Vrms (42.4 V peak) or less, and a power supply consisting of a class 2 power supply unit confirming to UL1310, or a class 2 transformer confirming to UL1585 1. Be careful of mis-wiring. This can cause malfunction, damage and fire in the unit. 2. To prevent noise and surge in signal lines, keep all wiring separate from power lines and high voltage lines. Otherwise, this can cause malfunction. 3. Check wiring insulation, as defective insulation can cause damage to the unit due to excessive voltage or current. 4. Do not bend or pull cables repeatedly, and do not place heavy objects on them or allow them to be pinched. This can cause broken lines. Series SV Specific Product Precautions 4 Be sure to read before handling. Refer to front matter 53 for Safety Instructions and pages 3 to 8 for 3/4/5 Port Solenoid Valve Precautions. No-load voltage (V peak) 0 to 20 [V] Over 20 [V] to 30 [V] Max. current rating 5.0 100 Peak voltage value A 650